XGY   Grimsby Mountain, ON Weather Observed At   43-11  N    79-34  W

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2026-05-23	2:45pm			Max		Min
Weather		----
Temperature		9.6 °C		12.6 °C	12:43am	9.3 °C	2:08pm
Relative Humidity		93 %		93 %	2:27pm	60 %	12:39am
Dew Point		8.5 °C		9.4 °C	7:32am	5.0 °C	12:13am
Wind Velocity		73 ° at  4.0 G 10.4 kt		16.5 kt	8:27am
Pressure		30.154 "  ↓		30.257 "	12:02am	30.152 "	2:40pm
Rainfall Rate		2.4 mm/h		97.6 mm/h	12:45pm
Snow On Ground		0 cm
Brightness / Darkness		33 W/m² /  0.00 m/"²		125 W/m²	11:38am	17.71 m/"²	1:19am
Remarks

Rainfall	Today	40.2 mm	Storm Total	40.2 mm
Snowfall	Today	0.0 cm	Storm Total	0.0 cm

Evapotranspiration

Today

-0.33 mm

Lake Conditions

Water Temperature  --- °C

Waves  ---

ICE FREE

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Meteor Index	17   Eta Aquariids
Aurora Index / Solar	0   Quiet   + 2 nT	Solar Flux   124  sfu  /   S 0    G 0    R 0   /  MUF   23.7 MHz

Sunrise	5:47am	Sunset	8:44pm
Moonrise	N/A	Moonset	N/A	Moon Phase	First Quarter

Grimsby Mountain Weather Maps
Local	Regional	Area	Synoptic
updated H+09 and every 10m	updated H+19 and H+49	updated H+19

Ontario 6-Hour Meteorological Summary

Canadian 6-Hour Meteorological Summaries

CLIMAT Data
Official	Yesterday					2004	2005	2006	2007	2008	2009	Normals & Records
		2010	2011	2012	2013	2014	2015	2016	2017	2018	2019
		2020	2021	2022	2023	2024	2025	2026

Grimsby Mountain Charts

	Sky Quality (Darkness) Meter courtesy of

              

Wx Map	Sat Pix	IR Sat Pix	Radar	Lightning
	Water	Ice

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  This is a privately operated weather station that is part of the Meteorological Service of Canada's official observing network.
Permission to publish the weather statistics found on this website is not required.
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